Michigan's I-75, including the Mackinac Bridge, has much lower speed limits than most interstates, sparking debate.

Michigan's Interstate 75, especially over the Mackinac Bridge, has one of the lowest speed limits in the U.S., at 45 mph for cars and 20 mph for trucks, deviating from the standard 70 mph interstate limit. The bridge's unique median and low speeds have sparked debates about its classification as an interstate. Other Michigan interstates also have unusually low speed limits, like 25 mph in Detroit.

3 months ago
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